The Z366-250-B10 is a direct-fit bucket dimensioned for 12 × 6–10 mL Vacutainer-style tubes — sized for the Hermle Z366-250-HC swing-out rotor on the Z366 / Z366-K chassis 4-place configuration. Sold as a 2-pack. Distinct from the bucket-plus-insert approach (Z366-250 + Z366-250-A10 insert delivers 32 × 10 mL Vacutainer per cycle), the B10 direct-fit bucket on the HC rotor variant delivers 48 × 10 mL Vacutainer tubes per cycle — 50% higher throughput. The Z366-250-HC chassis-rotor configuration also runs at deep cold-chain temperature (−2 °C at max speed).
Key Specifications
| SKU | Z366-250-B10 |
| Type | Direct-fit bucket — 12 × 6–10 mL Vacutainer-style |
| Pack quantity | 2 buckets per SKU (full 4-bucket configuration takes 2 units = 4 buckets) |
| Per-bucket capacity | 12 × 6–10 mL Vacutainer-style tubes |
| Per-cycle throughput (full configuration) | 48 × 10 mL Vacutainer tubes per cycle |
| Tube format | 6–10 mL Vacutainer-style blood collection (16 mm OD, 75–100 mm length) |
| Compatible rotor | Z366-250-HC swing-out rotor (HC = high-capacity variant of Z366-250) |
| Compatible chassis | Z366, Z366-K (refrigerated), and -E voltage variants |
| Max. operating speed | 4,500 rpm at 3,735 × g maximum |
| Max. radius | 16.5 cm (0.1 cm radius correction with this bucket) |
| Temperature at max speed (Z366-K refrigerated) | −2 °C |
| Geometry | Swing-out (0–90°) — flat sediment surface |
| List price | $562 (2-pack) |
Direct-Fit Bucket vs Bucket-Plus-Insert — Configuration Choice
The Z366 chassis offers two paths for swing-out 10 mL Vacutainer workflows:
| Configuration | Per cycle | Approach |
| Z366-250-B10 (this SKU) | 48 × 10 mL Vacutainer | Direct-fit bucket on Z366-250-HC rotor (dedicated, 50% higher throughput) |
| Z366-250 + Z366-250-A10 insert | 32 × 10 mL Vacutainer | Bucket + insert on Z366-250 rotor (bucket holds other inserts too) |
Pick the B10 when higher per-cycle throughput matters and the lab's primary workflow is 10 mL Vacutainer-style clinical-blood-component prep. Pick the bucket+insert path when the bucket needs to serve multiple tube/bottle formats.
Compatibility & When to Order This SKU
Bucket pairing — Z366-250-HC rotor only. Order this SKU when:
- Commissioning a Z366-250-HC for institutional 10 mL Vacutainer clinical-blood-component workflow — order 2 units for full 4-bucket configuration (48 tubes/cycle).
- Adding higher-throughput 10 mL Vacutainer capability to an existing Z366 / Z366-K install that currently uses the bucket+insert configuration on the Z366-250 rotor.
- Replacement buckets if a current set is damaged or worn.
Application Profile
Institutional clinical-blood-component prep at 48 tubes per cycle — hospital reference labs and large clinical-research recruitment workflows that need higher per-cycle throughput than the bucket+insert configuration delivers.
Deep cold-chain clinical-blood prep at scale — when the workflow needs the Z366-K's −2 °C cold-chain integrity at high per-cycle throughput.
Biobank intake at institutional throughput — biobank workflows handling 10 mL primary collection tubes at scale, where the 48-tube-per-cycle throughput matches institutional intake volume.
Hospital chemistry and hematology prep at scale — clinical chemistry and hematology bench prep at institutional throughput on the Z366-K platform.
Clinical-research recruitment at scale — recruiting-phase studies that draw 10 mL Vacutainer tubes at high per-day volume on the deep cold-chain chassis.
Veterinary clinical at scale — institutional veterinary practice or veterinary-research lab throughput in 10 mL Vacutainer-style format.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must be installed for symmetric balance at 4,500 rpm.
Per-bucket symmetric loading. Within each bucket, the 12 tubes should be balanced symmetrically — pair tubes by mass.
Tube cap confirmation. All Vacutainer rubber stoppers must be fully seated before spinning at 4,500 rpm.
Z366-250-B10 ships as 2 buckets. 6–10 mL Vacutainer-style tubes are operator-supplied (commodity clinical phlebotomy supplies).
Required for operation:
- Z366-250-HC rotor body (sold separately) or already in inventory
- For full 4-bucket configuration: order 2 units of this SKU
Confirm at quote: rotor pairing (Z366-250-HC in inventory), chassis pairing (Z366 or Z366-K), tube format (6–10 mL Vacutainer-style), pack count (2 packs for full 4-bucket configuration = 48 tubes/cycle), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the buckets.
Z366-250-HC direct-fit bucket family (Z366 / Z366-K chassis):
- Z366-250-B10 (this product) — 12 × 6–10 mL Vacutainer (48/cycle)
- Z366-250-B57 — 14 × 1.8–7 mL pediatric Vacutainer (56/cycle)
- Z366-250-B15 — 10 × 15 mL conical (40/cycle)
- Z366-250-B50 — 4 × 50 mL conical (16/cycle)
- Z366-250-B250 — 1 × 250 mL bottle (4/cycle)
Match the direct-fit bucket to the workflow's primary tube/bottle format. The Z366-250-HC rotor is the higher-throughput sister to the bucket-insert Z366-250 rotor on the same chassis.
